There is another good tip posted by someone way back when (Puki?) ..
Create a separate hardware profile for gaming so that you can kill off services which you don't need when playing games
To create a profile:
==============================
Right-Click My Computer icon
Choose Properties
Now Hardware tab
Click Hardware Profiles button
Which takes you to:

Add a new profile by copying an existing one
(its worth reducing the timeout to 5 seconds at this stage too)
Select the new profile and click Properties button
Click the "Always include this profile as an option when Windows starts" check box
With this new profile addded you can dictate which services are run under the profile:
Select services
=====================================
Click Start button and choose Run
Type "services.msc"
Right-Click on a service and choose Properties
Select Log On tab
You should be here:

Choose your new profile and click Disable button
Repeat the process for other unwanted services
Click Apply/Ok when done
Now, When you restart the PC, you are given the choice of profiles to run
Create a separate hardware profile for gaming so that you can kill off services which you don't need when playing games
To create a profile:
==============================
Right-Click My Computer icon
Choose Properties
Now Hardware tab
Click Hardware Profiles button
Which takes you to:

Add a new profile by copying an existing one
(its worth reducing the timeout to 5 seconds at this stage too)
Select the new profile and click Properties button
Click the "Always include this profile as an option when Windows starts" check box
With this new profile addded you can dictate which services are run under the profile:
Select services
=====================================
Click Start button and choose Run
Type "services.msc"
Right-Click on a service and choose Properties
Select Log On tab
You should be here:

Choose your new profile and click Disable button
Repeat the process for other unwanted services
Click Apply/Ok when done
Now, When you restart the PC, you are given the choice of profiles to run